12661030 has 32 divisors (see below), whose sum is σ = 24651360. Its totient is φ = 4665600.

The previous prime is 12661027. The next prime is 12661031. The reversal of 12661030 is 3016621.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 12660989 and 12661007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12661031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6130 + ... + 7930.

It is an arithmetic number, because the mean of its divisors is an integer number (770355).

Almost surely, 2^12661030 is an apocalyptic number.

12661030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12661030 is a deficient number, since it is larger than the sum of its proper divisors (11990330).

12661030 is a wasteful number, since it uses less digits than its factorization.

12661030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1864.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 12661030 is about 3558.2341125901. The cubic root of 12661030 is about 233.0717726664.

Adding to 12661030 its reverse (3016621), we get a palindrome (15677651).

The spelling of 12661030 in words is "twelve million, six hundred sixty-one thousand, thirty".